Dissertations / Theses on the topic 'Surgical suture'
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Loh, Aeseun. "Controlled release of drugs from surgical suture." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14960.
Full textMICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.
Bibliography: leaf 39.
by Aeseun Loh.
B.S.
Samson, Genevieve. "Reinforcing Effect of a Cyanoacrylate Adhesive on Surgical Suture Knots." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-03212009-112007/.
Full textSaia, Paula Simone. "Sistema ceratométrico de apoio a suturas na córnea." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-26032008-153951/.
Full textA system for ophthalmic surgery support has been developed in order to minimize the residual astigmatism due to the induced irregular shape of the cornea by corneal suture. The system projects 48 light spots, from LEDs, displayed in a precise circle at the lachrymal film of the examined cornea. The displacement, the size and deformation of the reflected image of these light spots are analyzed providing the keratometry and the circularity of the suture. Measurements in the range of 32D - 55D (up to 23D of astigmatism are possible to be obtained) and a self-calibration system has been designed in order to keep the system calibrated. Steel precision spheres have been submitted to the system and the results show 99% of correlation with the fabricant\'s nominal values. The system has been tested in 13 persons in order to evaluate its clinical applicability and has been compared to a commercial keratometer Topcon OM-4. The correlation factors are 0,92 for the astigmatism and 0.99 for the associated axis. The system indicates that the surgeon should achieve circularity \'> OR =\' 98% in order to do not induce astigmatisms over 3D.
Lopes, Ana Lurdes Rodrigues. "Extra-articular iliofemoral suture placement with bone anchors : surgical option for resolution of craniodorsal coxofemoral luxations in dogs." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2017. http://hdl.handle.net/10400.5/14348.
Full textCoxofemoral luxations are a common traumatic injury seen in small animal practice, representing up to 90% of all luxations in dogs and cats. Despite the variety of surgical techniques available for the management of this condition, none seem to be ideal, as almost every surgical procedure has complications and drawbacks associated with it. However, extra-articular techniques have been described in order to avoid potential complications and studies have reported good or excellent clinical results with low rates of complications. In this study, we described and evaluated a modification of the extra-articular iliofemoral suture placement technique, originally described by Slocum and Devine (1987), through the application of two bone anchors and a crimping system, and reported complications associated with the procedure. The study sample comprised 7 dogs and a minimum of 4 weeks follow-up period was required. The overall complication rate was 29% (2/7), including surgical wound infection and reluxation. The results of this study suggest that the extra-articular iliofemoral suture with bone anchors appears to be an effective surgical technique for the treatment of craniodorsal coxofemoral luxations, but further research is necessary to investigate the factors associated with patient selection that might justify some of the postoperative complications identified.
RESUMO - Extra - articular iliofemoral suture placement with bone anchors : surgical option for resolution of craniodorsal coxofemoral luxations in dogs - As luxações coxofemorais são uma lesão frequente em clínica de animais de companhia, representando até 90% de todas as luxações que ocorrem em cães e gatos. Apesar da variedade de técnicas cirúrgicas disponíveis para a sua resolução, nenhuma parece ideal, pois quase todos os procedimentos cirúrgicos apresentam complicações e inconvenientes associados. Encontram-se descritas técnicas extra-articulares que visam evitar potenciais complicações e estudos demonstram bons a excelentes resultados com uma taxa de complicações baixa. Neste estudo descrevemos e avaliámos uma modificação da técnica de colocação de uma sutura extra-articular iliofemoral, descrita originalmente por Slocum e Devine (1987), aplicando duas âncoras ósseas e um sistema de fixação, descrevendo as complicações associadas com este procedimento. A amostra compreendeu sete cães, tendo sido requerido um período mínimo de 4 semanas de acompanhamento. Foram verificadas 29% (2/7) de complicações, incluindo infeção da sutura e reluxação. Os resultados deste estudo sugerem que a técnica de sutura extra-articular iliofemoral com âncoras ósseas parece ser um método eficaz para o tratamento de luxações coxofemorais craniodorsais, mas mais estudos são necessários para investigar os fatores associados com a seleção do paciente que podem ter justificado algumas das complicações pós-operatórias identificadas.
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Скорук, Р. В. "Морфологічні зміни реакції тканин печінки та скелетних м'язів на використання традиційного та наномодифікованого хірургічного шовного матеріалу." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/31871.
Full textStott, Philip Martin. "Surgical knots and sutures." Thesis, University of Sussex, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436228.
Full textGoran, Petaković. "Uporedna analiza rezultata operativnog lečenja ingvinalnih hernija beztenzionim i konvencionalnim tehnikama." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=92891&source=NDLTD&language=en.
Full textINTRODUCTION: Inguinal hernioplasty is the most common surgical procedure in abdominal surgery. In the history of herniology have developed different ideas, and from them emerged operational methods, which are aimed at educating quality of connective tissue at the site of the hernia defect. Nowadays, there are numerous surgical techniques, based on the tensioned or tension-free principles, with the use of surgical mesh for open access as well as laparoscopic techniques. Common goal of these methods is creating ideal inguinal hernioplasty despite the existence of a huge number of surgical procedures and techniques, there is still no so-called »Proper hernioplasty " that would satisfy all the necessary requirements related to the problem of inguinal hernia. AIM AND HYPOTHESIS: The aim of this study was to make a comparative analysis between two different open access surgical techniques conventional tension hernioplasty and tension-free techniques, with the use of surgical mesh .The following parameters were used during the research: determining the level of postoperative pain according to a numerical scale, visual analogue scale and categorical scale of pain; determining the initial independent physical activities: (bending the legs, straining abdominal muscles, getting up) in the immediate postoperative period; gradation levels of muscular strength, determination period when patients can return to their usual daily activities and work duties; determining the rate of postoperative morbidity and mortality and to determine rates of early recurrence of the disease. WORKING HYPOTHESIS: Tension-free inguinal hernioplasty characterized by significantly less operative trauma, which results in smaller local and generalized body's response to stress. In patients operated by the tension. free method is expected to lower the intensity of pain, a shorter stay in the hospital setting, a smaller percentage of postoperative complications, faster return to normal physical and occupational activities and much lower degree of disease recurrence. It is assumed that the tensional. free inguinal hernioplasty compared with conventional causes less discomfort for patients, significantly less postoperative pain and better muscle activity. Better muscle activity is reflected in a facilitated mobilization, quality of movement and less painful gait, without bending the body at the side of the surgical wound. MATHERIAL AND METHODS: The research was a prospective, clinical-statistical study of the monitoring parameters (preoperative, intraoperative and postoperative) in each of the operated patients. The study involved a series of 200 patients hospitalized at the Clinic for Abdominal, Endocrine and Transplantation Surgery, Clinical Center Vojvodine, from December 2002 to August 2007, divided into two groups of 100 patients, randomly chosen. First, the test group consisted of patients operated by the tension-free procedures, the other, the control group consisted of patients operated on conventional techniques. The method used is the work of clinical statistical tracking of all necessary physiological parameters, and the results were analyzed and compared with each other with multivariate statistical methods of analysis. Found values are compared with each other parametric and non-parametric tests of significance at p <0.05. RESULTS: The comparison between the two study groups was performed during the preoperative, intraoperative and postoperative period, using various statistical parameters. It was noted using the statistical analysis, the homogenity of the groups in terms of age and sex distribution, as well as local preoperative findings related to the type, size and location pounds as well as towards the classification of hernias. In the following parameters is statistically significant difference: postoperative pain, graduations of muscle strength, healing of physical activity, the quantity of analgesics, length of hospitalization, the presence of bilateral hernias, the return of work activities and responsibilities, postoperative complications and recurrence. The data are presented in tables, and partly in the form of graphs and charts. CONCLUSIONS: 1. In patients operated by the tension-free obvious method is significantly less postoperative pain and faster recovery and return to usual daily and work activities 2. The procedure should be performed in all cases with the presence of large defects and lacerated back wall of the inguinal canal 3. Tension-free hernioplasty is characterized by a smaller number of recurrence compared with conventional hernioplasty 4. Patients with bilateral inguinal hernias and recurrent have a full indication of the performance of the tension-free hernioplasty with the installation of mesh. 5. A prerequisite for the successful work carried out tension-free hernioplasty application is large enough prosthesis ( mesh ), measuring 15 x 10 cm.
Siqueira, Pablo Rodrigo de. "Sutura endoscópica para perfuração gástrica nos procedimentos cirúrgicos endoscópicos translumenais por orifício natural, utilizando dispositivo T-Tag associado à câmara plástica protetora: factibilidade e resultados - estudo experimental." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5132/tde-14012015-145945/.
Full textThe endoscopic gastric perforation is a consequence of some endoscopic procedures and now a way to manage abdominal organs. This is the reason why endoscopists are studying a safe endoscopic repair. The objective was to evaluate feasibility and results of the gastric opening closure similar to those performed in natural orifice translumenal endoscopic surgery procedures using T-Tag associated with the plastic protection chamber. Ten Landrace pigs underwent a gastric perforation of 1.8 cm in diameter under general anesthesia. The opening was repaired with stitch assembled in a T-Tag anchor placed through the gastric wall with a needle. A plastic transparent chamber, adapted to the endoscope tip protected the abdominal organs from the needle puncture outside the stomach. Six T-Tags were placed in most cases and the stitches were tied with a metallic tie-knot, forming three sutures. The leakage test was performed with a forceps and by air distention. The animals received liquids in the same operative day. One daily shot antibiotic during two days was used. No complication was detected in the postoperative course. One month later the endoscopy revealed a scar in all animals, and the majority of these with suture material. The antral anterior gastric wall was clear with few adhesions in the laparotomy performed in the same time. The endoscopic repair using T-Tag and a protector chamber is feasible, easy to perform and safe. Further studies are needed to show the real value of this kind of procedure
Manneklint, Anna. "Triklosanbelagda suturers förebyggande effekt mot postoperativa sårinfektioner : En systematisk litteraturstudie med metaanalys." Thesis, Linnéuniversitetet, Institutionen för hälso- och vårdvetenskap (HV), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-86096.
Full textBackground: Approximately 2,3 % of the patients undergoing surgery in Swedish healthcare develop surgical site infections. These infections are often associated with prolonged hospital stay, additional surgical procedures and increased mortality. Surgical site infections cause patient suffering and increase healthcare costs. In healthcare, standard guidelines and work methods are used to prevent patients from developing surgical site infections. New methods to reduce the risk of surgical site infections are being developed and studied, such as sutures with antibacterial coating. One of these is Triclosan-coated sutures. However, there is some disagreement on its preventive effects and role in reducing surgical site infections. Aim: The aim of this study was to investigate if Triclosan-coated sutures have a preventive effect against surgical site infections. Method: This study was conducted as a systematic literature review with meta-analysis of 7 RCT. These studies all had a follow up time of 30 days and used the criteria of CDC, Centers for Disease Control and Prevention, to identify surgical site infections. Result: This study showed no statistically significant results of Triclosan-coated sutures preventive effect against surgical site infections. (RR=0,8, 95 % CI=0,63-1,02, p=0.07). Conclusion: This study indicates that Triclosan-coated sutures should not be used routinely to prevent surgical site infections. More studies are needed.
Oliveira, Rosany Larissa Brito de. "Avaliação estética da queiloplastia em indivíduos com fissura labial comparando dois materiais para síntese cutânea." Pós-Graduação em Ciências da Saúde, 2018. http://ri.ufs.br/jspui/handle/riufs/7638.
Full textIntrodução: A fissura orofacial (FO) não sindrômica é o quarto defeito congênito mais frequente, além de ser a malformação craniofacial mais ocorrente. A cirurgia primária de reparação da fissura, do lábio (queiloplastia) ou do palato (palatoplastia) deve ser mais estética e funcional possível, já que o lado estético do nariz e do lábio do fissurado tem valor que vai muito além da vaidade humana, sendo primordial na formação da personalidade da criança. Objetivo: O objetivo deste estudo é comparar os resultados estéticos da queiloplastia em indivíduos com fissura labial unilateral comparando dois materiais diferentes para síntese cutânea. Casuística e métodos: Foi realizado um ensaio clínico cego controlado com distribuição aleatória na Sociedade Especializada em Atendimento ao Fissurado do Estado de Sergipe (SEAFESE). Participaram desta pesquisa todos os indivíduos que foram submetidos à queiloplastia na SEAFESE entre outubro de 2014 a junho de 2017, constituindo uma população de 50 indivíduos. O grupo controle teve como material de síntese cutânea o fio reabsorvível de poliglactina 910 e o grupo experimental, o adesivo tecidual octil-2- cianoacrilato. Esses indivíduos foram avaliados por seis avaliadores cegos, com um mês e seis meses de pós-cirúrgico, quando foram tomadas fotografias frontais padronizadas da face. A avaliação da face foi realizada utilizando a Escala Visual Analógica (EVA), a Escala Cosmética de Avaliação de Singer e a Escala de classificação proposta por Mortier. Além disso, foi realizada a análise antropométrica de Pietruski. Resultados: O perfil sociodemográfico da população estudada é de um indivíduo com idade média de 3,2 anos e com renda mensal familiar abaixo de dois salários mínimos. A maioria é natural do interior do estado de Sergipe e possui fissura pré-forame incisivo. Quanto aos resultados estéticos da queiloplastia, no segmento de um mês de pós-operatório, não houve diferença estatística significativa para a EVA e para a Escala de Mortier. Mas na Escala de Singer, o adesivo tecidual apresentou melhores resultados para as variáveis nível adjacente à pele, cor, marcas de sutura e na aparência geral. No segmento de seis meses de pós-operatório, também não houve diferença estatística significativa para a EVA. Mas houve diferença para a Escala de Singer (largura máxima da cicatriz, cor e marcas de sutura) e na Escala de Mortier (cicatriz e vermelhão do lábio superior), quando foram notados melhores resultados cosméticos com o uso do adesivo. Na análise antropométrica de Pietruski, quando os dois materiais de síntese cutânea foram comparados, observou-se diferença estatística significativa em três dos dezenove parâmetros avaliados. Por fim, quanto às complicações pós-operatórias, houve apenas uma deiscência parcial da ferida cirúrgica, no grupo controle. Conclusões: Os adesivos teciduais apresentaram um resultado cosmético superior às suturas reabsorvíveis. Na avaliação de 6 meses, o adesivo apresentou resultados superiores na análise antropométrica de Pietruski e nas escalas de Singer e Mortier. Na comparação entre cirurgiões plásticos e cirurgiões bucomaxilofaciais, houve diferença na avaliação de três variáveis, sendo os cirurgiões bucomaxilofaciais mais exigentes.
São Cristóvão, SE
Бобко, Святослав Олександрович. "Експериментальна установка для перевірки герметичності хірургічних швів порожнистих органів." Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/28700.
Full textThesis contains 72 pages, 34 illustrations, 19 tables and 20 sources according to the list of references. The purpose of the thesis is to create a method for checking empty bodies for the tightness of the surgical and weld seam. In the thesis the prototype of the installation was made which allows to check on the tightness of the welded suture and surgical, as well as to find out which seam is more resistant to external stimuli. To achieve the goal of DR were sett he following objectives: 1. To conduct a review of scientific literature on selected topics. 2. To analyze the types of surgical and weld seams and requirements fort hem. 3. Based on the literature data, compare the existing control techniques and choose the optimal for the subsequent technical implementation. 4. To make a prototype, which makes it possible to quickly check the surgical suture for tightness. 5. Test the device using the proposed method on surgical sutures of different types.
Pasternak, Björn. "Towards surgical use of matrix metalloproteinase biology /." Linköping : Department of Clinical and Experimental Medicine, Linköping University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11489.
Full textSantos, Eduardo Rosa dos. "Síntese e cicatrização de pele em cães com fio de náilon, fio farpado e grampo cirúrgico." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/179767.
Full textDermorrhaphy is vital to the success of the procedure because it is the last surgical step. This study compared the synthesis and the process of skin healing in dogs using three different materials, nylon thread (GFN group), barbed wire (GFF group) and surgical staple [SV1] (GGC group) after ovariohysterectomy. Twenty-seven canine females without comorbidities were electively castrated. The animals were randomly divided into three treatment groups and submitted to dermorrhaphy with the materials to be tested.. The following were evaluated: time to suture the skin with each material, the complications reported by the tutors and the local temperature of the skin in healing process. Several clinical parameters of healing were also evaluated in seven postoperative days, as well as histological parameters of skin biopsies collected at 14 days. The surgical staple showed the shortest time (p<0.001) for dermorrhaphy and the higher occurrence of suture dehiscences. The barbed wire had the lowest score (p=0.006) of clinical changes on the seventh postoperative day and did not presented an occurrence of suture dehiscence. However, there was no difference between the groups regarding the histological evaluation of cicatricial biopsy at 14 days. The barbed wire showed security in the suture and easy manipulation in the dermorrhaphy of dogs, while the surgical staple used proved to be unreliable due to the high degree of dehiscence.
Pasternak, Björn. "Towards surgical use of matrix metalloproteinase biology." Doctoral thesis, Linköpings universitet, Ortopedi och idrottsmedicin, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11489.
Full textCho, Alvaro Baik. "Aplicação da cola de fibrina em microanastomoses vasculares: análise comparativa com a técnica de sutura convencional utilizando um modelo experimental de retalho microcirúrgico." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5140/tde-28052008-131815/.
Full textINTRODUCTION: Microvascular anastomosis is an important component of the free flap surgical procedure. Currently, the conventional suture is still considered the gold standard technique. However, it presents some problems for being technically demanding, time consuming and with a long learning curve. In looking for an easier and faster technique, alternative methods of anastomosis were studied including the fibrin glue. Despite the good results reported in the literature, its acceptance in the clinical setting is still small Controversies regarding its thrombogenicity and mechanical resistance create some concerns about its safeness. The absence of a more realistic experimental model has not allow a full aprecciation of its potencial benefits in clinical use. The aim of this study is clarify these controversies and demonstrate the advantages of fibrin glue application in an environment that can reproduce the clinical practice. METHODS: A free inguinal flap transfer to the anterior cervical region was used as experimental model. The circulation of the flap was restored by means of microvascular anastomosis between the femoral and carotid arteries (end-to-side) and between the femoral and jugular veins (end-to end). The procedures were performed in 20 rabbits that were divided into two groups (n= 10) according to the anastomosis technique: Group I (conventional) and Group II (fibrin glue). RESULTS: The application of fibrin glue significantly reduced the amount of sutures required to complete the anastomoses: 4 less sutures in the arteries and 4,5 less sutures in the veins. In Group I, the mean arterial anastomosis time was 17,21 minutes against 12,72 minutes in Group II. In the veins, the mean anastomosis time in Group I was 22,93 minutes against 16,57 minutes in Group II. The application of fibrin glue also reduced the flap ischemic time and the total operative time by 11,5 minutes and 15,67 minutes, respectively. The flaps\' survival rate was 90% in both groups. CONCLUSIONS: The application of fibrin glue in microvascular anastomoses was reliable and effective in this study.
Cho, Alvaro Baik. "Sutura mínima associada ao adesivo de fibrina em microanastomoses arteriais: estudo experimental comparativo com a técnica de sutura convencional." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/5/5140/tde-02042007-110447/.
Full textMastering of the microvascular anastomosis technique is an essencial requirement to perform reconstructive microsurgical procedures, such as replantation surgery and free tissue transfers. Until now, the conventional suture technique is the most widely accepted in the clinical setting, for its safety and versatility. However, this technique presents some problems for being technically difficult, time consuming and causes additional trauma to the vessel wall. The aim of this study was to test an alternative method of microvascular arterial anastomosis, by reducing the number of sutures with application of fibrin adhesive. Sixty Wistar rats underwent to microvascular anastomosis at the femoral or carotid arteries. The animals were divided into four subgroups, according to the operated artery and the employed suture technique: FCS (femoral - conventional suture), FFA (femoral - minimal suture with fibrin adhesive), CCS (carotid - conventional suture) and CFA (carotid - minimal suture with fibrin adhesive). Both anastomosis techniques were compared by means of statistical analisys of the clinical and histopathological parameters. The mean number of sutures required to complete the anastomosis was 7,7 in subgroup FCS and 9,5 in subgroup CCS. In subgroup FFA, the anastomosis was performed with only four sutures and in subgroup CFA, with only six. The mean anastomotic time was 15,81 minutes in subgroup FCS, 13,62 minutes in subgroup FFA, 18,87 minutes in subgroup CCS and 17,33 minutes in subgroup CCS. The application of fibrin adhesive, significantly reduced the number of sutures and the time taken to perform the anastomosis, in subgroups FFA and CFA. The amount of anastomotic bleeding was also significantly reduced in these subgroups. The immediate and late patency rates were 100% in all subgroups, except in subgroup FFA where it was 93,33%. No significant differences were observed among the two techniques, concerning the evaluated histopathological parameters (inflammatory process, medial fibrosis and subintimal hyperplasia). The author concluded that, the fibrin adhesive application with minimal suture technique was faster and easier than the conventional suture technique, without increasing the trombogenicity of the anastomosis, in this experimental model.
Brunaldi, Vítor Ottoboni. "Revisão sistemática e metanálise do tratamento endoscópico do reganho de peso pós-derivação gástrica em Y-de-Roux." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/5/5168/tde-05062018-105600/.
Full textIntroduction: Roux-en-Y Gastric Bypass (RYGB) is the most commonly performed bariatric procedure. Despite its high efficacy, some patients regain part of their lost weight. Several endoscopic therapies have been introduced as alternatives to treat weight regain but most of the articles are relatively small with unclear long-term data. Aim: To systematically assess the efficacy of endoscopic therapies for weight regain after RYGB. Methods: We searched MEDLINE, EMBASE, Scopus, Web of Science, Cochrane, OVID, CINAHL/EBSCo, LILACS/Bireme and gray literature. Primary outcomes were absolute weight loss (AWL), excess weight loss (EWL) and total body weight loss (TBWL). Results: Thirty-two studies were included in qualitative analysis. Twenty-six articles enrolling 1148 patients described fullthickness (FT) endoscopic suturing and pooled AWL, EWL and TBWL at 3 months were 8.5±2.9kgs, 21.6±9.3% and 7.3±2.6%, respectively. At 6 months, they were 8.6±3.5kg, 23.7±12.3% and 8.0±3.9%. At 12 months, they were 7.63±4.3kg, 16.9±11.1% and 6.6±5.0%. Subgroup analysis showed that all outcomes were significantly higher in the group with FT suturing combined with argon plasma coagulation (APC) (p < 0.0001). Meta-analysis including 15 FT studies showed greater results and confirmed the significant superiority of FT-APC compared to FT alone. Three studies described superficial-thickness suturing with pooled AWL of 3.0±3.8kg, 4.4±0.07kg and 3.7±7.4kg at 3, 6 and 12 months, respectively. At short, mid and long-term follow-up, FT suturing provided better outcomes compared to ST (p < 0.05). Two articles described APC alone with mean AWL of 15.4±2.0kg and 15.4±9.1kg at 3 and 6 months. No study describing sclerotherapy fulfilled eligibility criteria. Conclusions: Full-thickness suturing is effective at treating weight regain after RYGB. Performing APC prior to suturing seems to result in greater weight loss. Head-to-head studies are needed to confirm our results. Full-thickness suturing lead to greater outcomes compared to superficial thickness suturing. Few studies adequately assess effectiveness of other endoscopic techniques
Dattilo, Philip Paul. "Knotless bi-directional barbed absorbable surgical suture." 2002. http://www.lib.ncsu.edu/theses/available/etd-11062002-205022/unrestricted/etd.pdf.
Full textMacedo, Ana Rita Barroca de. "Is surgical suture type associated with Carpal Tunnel Release results? A Prospective Study." Dissertação, 2020. https://hdl.handle.net/10216/128718.
Full textObjective: To evaluate the effect of the string used during Carpal Tunnel Surgical Release on post-surgical outcome. Methods: Patients with programmed CTSR were prospectively recruited between February and July 2019. We assessed socio-demographic characteristics (age, gender and occupation) along with other factors relevant to this study (EMG reports pre-op, comorbidities, laterality and hand dominance). Moreover, we applied the quick form of the Disabilities of the Arm, Shoulder and Hand (quickDASH) questionnaire before and after surgery (between three- and six-months post-op), in order to assess the differences in surgical outcomes of the two compared strings: Nylon and Poliglecaprone 25. Results: Study sample consisted of 38 patients. The overall quickDASH score significantly improved after CTSR, as well as each item of the questionnaire. There were no statistically significant differences between the two strings in terms of evolution of the quickDASH score and absenteeism from work. Conclusion: CTSR significantly improved the quality of life of interventioned patients, irrespectively the type of suture used. No recommendation for a preferable type of string could be suggested to improve postsurgical outcome.
Macedo, Ana Rita Barroca de. "Is surgical suture type associated with Carpal Tunnel Release results? A Prospective Study." Master's thesis, 2020. https://hdl.handle.net/10216/128718.
Full textObjective: To evaluate the effect of the string used during Carpal Tunnel Surgical Release on post-surgical outcome. Methods: Patients with programmed CTSR were prospectively recruited between February and July 2019. We assessed socio-demographic characteristics (age, gender and occupation) along with other factors relevant to this study (EMG reports pre-op, comorbidities, laterality and hand dominance). Moreover, we applied the quick form of the Disabilities of the Arm, Shoulder and Hand (quickDASH) questionnaire before and after surgery (between three- and six-months post-op), in order to assess the differences in surgical outcomes of the two compared strings: Nylon and Poliglecaprone 25. Results: Study sample consisted of 38 patients. The overall quickDASH score significantly improved after CTSR, as well as each item of the questionnaire. There were no statistically significant differences between the two strings in terms of evolution of the quickDASH score and absenteeism from work. Conclusion: CTSR significantly improved the quality of life of interventioned patients, irrespectively the type of suture used. No recommendation for a preferable type of string could be suggested to improve postsurgical outcome.
Jiang, Guei-Huang, and 江貴凰. "Beneficial Effects of Thin-film Metallic Glass Coating on Property Improvements of Surgical Suture Needles." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/z762rq.
Full text國立臺灣科技大學
材料科學與工程系
105
Suture material is used to bring tissue or skin together in a wound or surgical laceration to aid in healing of the wound. Effective wound closure is important for success of any surgical procedure, which is determined by surgical techniques, the durability and the quality of suture needles. Suturing during some surgery operations, such as Minimally Invasive Surgery (MIS), remains a time-consuming task with a high-risk of infection, so that improving the efficacy of suture materials is critical to reduce infections. Owing to the amorphous nature, thin film metallic glasses (TFMGs) exhibit exceptional mechanical properties, such as high strength, good wear-resistance and low coefficient of friction. In addition, TFMGs have been reported to show good biocompatibility and antibacterial properties. TFMG coating can be a potential candidate for enhancing the surface properties of needles. In this study, two types of suture needles (6/0 reverse cutting needle and 7/0 taper cutting needle) with 60-nm-thick Zr-based (Zr53Cu33Al9Ta5) TFMG coatings deposited by magnetron sputtering are prepared to compare the performance with bare needles and the needles with lubricant in the 40-time insertion tests against homogenous polyurethane rubber and vascular graft, respectively. The average values of peak loads after 40-time insertion tests conducted with 6/0 needles against polyurethane rubber are 2.21 N for bare needles, 2.23 N for the needle with lubricant, and 1.9 N for TFMG-coated needle. After 40-time insertion tests against rubber, TFMG samples show the smallest peak-load increments (2-8 %) than bare samples (~42 %) and the needles with lubricant (48-59 %). Also, the surface-roughness increments (before and after tests) of TFMG samples (~ 5 %) are lower than that of bare samples (~24 %), which is consistent with the results in force increments and suggests the excellent protection function and wear performance of TFMG coatings. In the insertion tests against vascular graft, the force increments of TFMG samples (~4 %) are still lower than bare samples (~22 %) and the needles with lubricant (~20 %), and the similar tendency also can be obtain from the investigation of needle-body/tissue interaction forces, implying that TFMG coatings not only can protect the needle tips but also needle bodies. On the whole, TFMG coatings can effectively protect the needle samples, irrespective of testing materials and needle types.
Hsieh, Tsung-chih, and 謝宗志. "The Technique and Biological Evaluation on Twisting PLA Multifilament Composite Chitosan to Fabricate Absorbable Surgical Suture." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/48302410234779629429.
Full text逢甲大學
紡織工程所
94
Polylactic acid (PLA) and chitosan are biodegradable materials, and they can be absorbed in the human body and had excellent biocompatibility; chitosan can promote wound healing and inhibit bacteria''s further growth. PLA surgical suture composite with chitosan not only can inhibit bacteria''s further growth, but also promote healing wound. In this study, the PLA multifilament twist with different twisting parameters with 350, 300 and 350 t.p.m. by rotor- twister to fabricate U.S.P. size 7-0, 5-0 and 4-0 surgical suture, and the best tensile strength were 3.1, 12.0 and 15.0N, the coefficient variation were 3.70, 1.75 and 1.44%. Then the PLA suture scouring with 1wt% sodium hydroxide to clean away impurities, and the knot-pull strength decrease to 1.66 and 6.84N of 7-0 and 5-0 PLA suture, but still conform with U.S.P knot-pull strength standard; at last, the PLA suture dip into 1wt%, and pH 5.5 chitosan solution, and the knot-pull strength decrease to 1.58 and 6.47N of 7-0 and 5-0 suture because of the PLA suture become hardness and the PLA suture twist reduce. In vitro hydrolysis test was performed at 37℃ by immersing 5-0 PLA suture in physiological saline (0.9wt% NaCl aqueous solution), the knot-pull strength decrease 12% after one month. In cell co-culture experiment, two kinds of materials of PLA film and PLA-chitosan film cell culture with fibroblast at 6, 12 and 24 hours, and the results show that the PLA is nontoxic material and chitosan can promote the fibroblast growth. In vivo test was carried out by subcutaneous implantation of two kinds of materials of PLA suture and PLA-chitosan suture in the rat back, the foreign body capsule of PLA-chitosan suture more smoothly than PLA suture after 7and 14 days; the foreign body capsule thickness of two kinds of materials were 100μm, and the results show that PLA and chitosan materials did not release toxic substances to effect tissue repair. In another vivo test was carried out by suturing two kinds of materials of PLA suture and PLA-chitosan suture in the rat skin, the inflammatory reaction of two kinds of materials were slight from 7 to 14 days, and the two kinds of materials absorption obviously after 28 days and fiber tissue grow up completely.
Puttergill, Brooke. "Surgical resources: an observational study of suture material use and cost in three general surgery units in Gauteng South Africa." Thesis, 2016. https://hdl.handle.net/10539/25792.
Full textSerras, Francisco Maria Pinhão Mateus Lorga. "Abordagem cirúrgica à rotura do ligamento cruzado cranial do cão: relato de casos clínicos." Master's thesis, 2018. http://hdl.handle.net/10437/8552.
Full textO presente trabalho consistiu em avaliar a utilização de duas técnicas cirúrgicas diferentes (Sutura fabelo tibial lateral e Osteotomia de nivelamento da meseta tibial) no tratamento da rotura do ligamento cruzado cranial em cães, mediante a descrição de quatro casos clínico-cirúrgicos. A rotura do ligamento cruzado cranial é uma das doenças ortopédicas de maior prevalência em cães. O seu quadro evolutivo leva a uma série de alterações articulares que culminam num decréscimo acentuado da sua função e consequente diminuição da qualidade de vida dos animais. Existem várias técnicas cirúrgicas para corrigir esta lesão e limitar a evolução das alterações articulares instaladas. As duas técnicas utilizadas no presente trabalho, assentam em diferentes princípios, sendo que uma é extracapsular e através de um implante tem a finalidade de mimetizar a função do ligamento cruzado cranial. A outra técnica, visa através de uma osteotomia, alterar a biomecânica do joelho, tendo como objetivo abdicar da necessidade funcional deste mesmo ligamento tornando-o redundante. A eleição da técnica consiste na ponderação de diferentes fatores como o elevado ângulo da meseta tibial, o peso corporal e estilo de vida do doente, assim como a disponibilidade financeira do tutor. Nos casos clínicos descritos no presente trabalho, ambas as técnicas utilizadas revelaram resultados satisfatórios, ainda que todos os doentes tenham demonstrado um período de recuperação pós-cirúrgico variável. Fatores como hiperatividade, cuidados como reabilitação física e intervenções cirúrgicas a ambos os joelhos, contribuíram para essa variação, assim como a cronicidade da doença.
The present work consisted in the evaluation of two distinct surgical techniques (Lateral suture system and Tibial plateau levelling osteotomy) for the treatment of the cranial cruciate ligament rupture in the dog, by using the description of four clinical study cases. The cranial cruciate ligament rupture is one of the most common orthopedic diseases in dogs. Its clinical panel leads to a series of joint changes that culminate in the lost of function and, consequently, in lower quality of life for the animals. There are several surgical techniques described in the literature that can be applied in the correction of this injury and limit the progression of the changes in the joints affected. Two of these techniques were used in the present work and rely on different principals. One is an extracapsular technique that by using one implant, acquires the ability to mimic the function of the cranial cruciate ligament. The other technique, demands a change on the biomechanics of the stifle joint and is achieved by an osteotomy. This last technique intends to waver the functional need of the ligament turning it redundant. The selection of one or other technique takes in consideration several factors as the high opening of the tibial plateau angle, the animal weigh, the life style of the dog and the financial possibility of the owner. In the clinical cases presented in this work, both techniques showed positive results, although the patients showed different recuperation times after surgery. Factors like hyperactivity, a physical rehabilitation programm or the intervention on both stifles, contributed for the different outcomes or to the chronicity of the primary problem.
Mellace, Giuseppe. "Cianoacrilato versus fio de sutura em cirurgia oral: revisão integrativa." Master's thesis, 2021. http://hdl.handle.net/10284/10536.
Full textIntroduction: Cyanoacrylates are the most widely applied tissue biological adhesives in the world in recente decades. In recente years, they have been studied as na alternative to conventional sutures due to their highly positive properties. Objective - The aim of this paper was to present a compilation of data reported in the literature to compare the use of cyanoacrylate with the use of conventional sutures in oral surgery. Materials and methods: This study presents an integrative literature review, based on a search of articles published between 1997 and 2021 in the Medline/PubMed. The MeSH terms used for the search were: “Cyanoacrylate OR Cyanoacrylates AND Oral Surgery”; “Cyanoacrylate OR Cyanoacrylates AND Suture OR Sutures” ; “Cyanoacrylate OR Cyanoacrylates AND Suture or Sutures AND Oral Surgery” . Results: A total of 33 articles were found, of wich 27 were excluded after excluding the inclusion and exclusion criteria and after Reading the abstracts and texts in full. Thus, 6 articles included in this review. Conclusion: Studies have shown that cyanoacrylate glues can be used as alternative to conventional sutures in oral surgery, mainly due to their ease of application, fast method, better hemostatic properties, healing, antimicrobial properties, bacteriostatic properties and rapid polymerization.
Hong, Tao. "Development of in vitro performance tests and evaluation of nonabsorbable surgical sutures." 1995. http://hdl.handle.net/1993/18824.
Full textRua, Nuno Alexandre França. "Sutureless bioprosthesis for aortic valve replacement: surgical and clinical results." Master's thesis, 2021. http://hdl.handle.net/10400.6/11413.
Full textIntrodução: A estenose valvular aórtica é a doença valvular mais comum em adultos em países desenvolvidos. O envelhecimento da população e o aumento das comorbilidades, incita o desenvolvimento de alternativas terapêuticas mais seguras. As próteses sem suturas têm demonstrado resultados promissores, especialmente em procedimentos tecnicamente complexos e à medida que mais pacientes necessitam de cirurgias concomitantes. Objetivos: Avaliar o desempenho clínico e hemodinâmico e durabilidade da válvula Perceval em substituição isolada da válvula aórtica e em procedimentos concomitantes. Métodos: Neste estudo de coorte longitudinal retrospetivo recolhemos dados de todos os pacientes adultos com doença da válvula aórtica submetidos a substituição da válvula com uma válvula Perceval entre Fevereiro de 2015 e Outubro de 2020. Dos 196 pacientes (idade média 77,20±5,08 anos; 45,4% mulheres; EuroSCORE II logístico médio 2,91±2,20%), a maioria tinha estenose aórtica. Os pacientes foram posteriormente divididos em dois grupos e comparados: um incluiu pacientes submetidos a substituição isolada (n=132) e o outro, pacientes com cirurgia concomitante (n=49). O seguimento destes pacientes foi efetuado até 5 anos. Resultados: Os tempos médios de clampagem da aorta e de circulação extracorporal foram de 33,31±14,08 e 45,50±19,04 minutos, respetivamente. Os tempos médios de internamento total e na unidade de cuidados intensivos foram 7,70±5,82 e 3,32±3,20 dias, respetivamente. 4 válvulas foram reimplantadas devido a mau posicionamento. Os gradientes transvalvulares médios foram 7,82±3,62 mmHg. Implante de pacemaker foi necessário em 12,8% dos pacientes, fibrilhação auricular de novo ocorreu em 21,9% e suporte de substituição renal foi necessário em 3,1%. A mortalidade foi de 2,0%. Não houve deterioração estrutural da válvula, AVC ou endocardite nos 5 anos de seguimento. Houve uma trombose da válvula. Comparativamente, pacientes com procedimentos concomitantes tinham pior função ventricular esquerda (66.7 vs 86.1%; p=0,030), maiores tempos de clampagem da aorta (43,33±11,60 vs 27,30±8,10 minutos; p<0,001) e de circulação extracorporal (59,98±17,60 vs 37,45±11,30 minutos; p<0,001). Adicionalmente, a estadia na unidade de cuidados intensivos foi mais longa (3,96±3,20 vs 2,80±2,70 dias; p=0,016). Não houve diferenças significativas em complicações pós-operatórias e sobrevivência. Conclusões: Este estudo confirma o excelente desempenho clínico e hemodinâmico e a segurança da válvula Perceval, mesmo ao fim de 5 anos, com resultados consistentes em intervenções isoladas e concomitantes, solidificando-a como uma opção viável para o tratamento de doenças isoladas da válvula aórtica, e agora também para pacientes que necessitam de procedimentos concomitantes.